Hardy, Darel W.
Wadsworth , 1975
Buku Teks
Armawi K. Mundit, author
Armico, 1986
Buku Teks
by Howard W. Alexander... [et.al.]
W.A. Benjamin, 1968
Buku Teks
Anderson, Daniel, author
Brooks/Cole, 1999
Buku Teks
Kiryakova, Virginia
The Longman Scientific & Technical, 1993
Buku Teks